Figure 2: Minimum distance of obstacles from the air opening
The motors are intended for use in areas subject to explosion hazards. The following data on the rating plate distin-
guish the motor as explosion-protected equipment:
• Degree of protection
• Explosion group
• Temperature class
Depending on the appliance category the motor is assigned to the relevant zone of the operating site.
Mounting
The motors are mounted either on the motor feet or on the flange at the installation site. All motors with shaft heights
of up to 355 mm can be mounted either horizontally or vertically thanks to their bearing layout. This applies also for
motors to be mounted with the feet on roofs and side walls. Motors with reinforced bearings are to be operated at a
minimum load to ensure the smooth operating of the anti-friction bearings.
Table 3: Minimum load on the shaft collar for motors with reinforced bearing
Shaft
height
Minimum
load
Shaft
height
Minimum
load
Shaft
height
Minimum
load
112 1100N 200 3400N 315 8000N
132 1600N 225 3800N 355 2000N
160 1900N 250 4900N 400 2000N
180 2700N 280 5500N 450 2300N
The bearings may be damaged if the minimum load is exceeded. Trial runs with no-load should last only a few min-
utes.
You can find the max. permissible loads in our catalogue or contact the manufacturer.
Align the motors according to the requirements of the coupling or pulley manufacturer. The feet are to be positioned
evenly and, if necessary, lined.
Please note!
Make sure that the fastening screws are duly dimensioned.
Data on the foundation loading generated by the motor can be requested from the manufacturer by specifying the
motor number. The fastening screws must be duly tightened according to their layout and secured to prevent loosen-
ing during operation and hence the damaging of the drive.
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